Venturi tube for spraying equipment

Abstract

The utility model relates to the technical field of spraying equipment, and provides a venturi tube for spraying equipment, which comprises a tube body, an external member and a nozzle. Wherein the pipe body is provided with a channel in the axial direction of the pipe body, and the cross section of the channel is gradually increased from the first end of the pipe body to the second end of the pipe body. The powder enters from the first end of the pipe body, is diffused and tends to flow to the second end, and the conveying efficiency of the powder can be improved. The sleeve piece is detachably arranged at the first end of the tube body in a sleeving mode so that the Venturi tube can be detached and replaced conveniently. The nozzle is arranged in the sleeve piece and is coaxial with the channel of the pipe body. According to the Venturi tube, the nozzle and the tube body are coaxially arranged, when powder enters from the nozzle, the powder is fully aligned with the first end of the tube body and enters the channel, the contact area of the powder and the first end of the tube body is reduced, abrasion of the first end of the tube body can be reduced, and the powder is conveyed more smoothly; and the powder conveying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying equipment, in particular to a venturi tube used for spraying equipment. Background Art

[0002] Spraying refers to the process of applying a coating to the surface of an object by dispersing the spray into uniform and fine droplets through a spray gun or a disc atomizer of the spraying equipment with the help of pressure or centrifugal force.

[0003] Powder spraying is the process of using powder spraying equipment to spray paint onto the surface of the workpiece. The powder will be adsorbed on the surface of the workpiece to form a powdery coating.

[0004] When spraying powder, it is generally necessary to use a powder pump device to transport the powder. The powder pump device includes a venturi tube, which uses the venturi effect to suck the powder into the spray gun.

[0005] However, in the related art, the Venturi tube in the powder pump is easily worn, the powder is not transported smoothly, and the transport efficiency is low. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a venturi tube for spraying equipment to solve at least one of the above technical defects in the prior art, reduce the wear of the venturi tube, and facilitate powder transportation to improve the powder transportation efficiency.

[0007] In order to achieve the purpose of the utility model, the utility model provides a venturi tube for a spraying device, and the venturi tube for the spraying device comprises:

[0008] The pipe body is provided with a channel along its own axial direction, and the cross section of the channel gradually increases from the first end to the second end of the pipe body;

[0009] A kit, detachably mounted on the first end of the tube body;

[0010] The nozzle is arranged in the kit and is coaxially arranged with the channel of the tube body.

[0011] Preferably, the nozzle is integrally formed with the kit and is connected to the outside.

[0012] Preferably, the tube body is provided with a barb, and the barb is inclined toward the first end of the tube body.

[0013] Preferably, the barbs are provided in plurality and are evenly distributed.

[0014] Preferably, the channel includes a first channel and a second channel that are interconnected.

[0015] The first channel is located at the first end of the tube body, the second channel is located at the second end of the tube body, and the second channel is a tapered hole.

[0016] Preferably, the diameter of the first channel is larger than the diameter of the tapered hole of the second channel at the first end of the tube body.

[0017] Preferably, the first channel and the second channel are coaxially arranged, and the nozzle is located in the first channel and coaxially arranged with the first channel.

[0018] Preferably, it also includes a sealing ring, which surrounds the outside of the kit.

[0019] Preferably, the kit is provided with corrugations on the outside.

[0020] Preferably, a protrusion is further provided outside the kit.

[0021] The beneficial effects of the utility model are as follows: the venturi tube for spraying equipment provided by the utility model arranges the nozzle coaxially with the tube body, so that when powder enters from the nozzle, the powder is fully aligned with the first end of the tube body to enter the channel, and the contact area between the powder and the first end of the tube body is reduced, so that the wear of the first end of the tube body can be reduced, and the powder can be transported more smoothly, thereby improving the powder transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other purposes, features and advantages of the present invention will become clearer through a more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the accompanying drawings are not deliberately scaled to the actual size, but the focus is on illustrating the main purpose of the present invention.

[0023] Figure 1 A schematic diagram of the overall structure of a venturi tube for a spraying device provided in an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of a cross-section of a local structure;

[0025] Figure 3 A schematic cross-sectional view of a Venturi tube for spraying equipment along the axial direction provided in an embodiment of the utility model.

[0026] In the figure:

[0027] 100, tube body; 110, channel; 111, first channel; 112, second channel; 120, barb;

[0028] 200, kit;

[0029] 300, Shooting mouth;

[0030] 400, sealing ring;

[0031] 500, ripple;

[0032] 600. Bump. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the relevant drawings.

[0034] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention pertains. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] Combine the following Figures 1 to 3 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute any limitation to the present invention.

[0037] See also Figures 1 to 3 The embodiment of the utility model provides a venturi tube for spraying equipment, and the venturi tube for spraying equipment includes a tube body 100, a kit 200 and a nozzle 300.

[0038] The tube body 100 is provided with a channel 110 along its own axial direction, and the cross section of the channel 110 gradually increases from the first end to the second end of the tube body 100. When the powder enters from the first end of the tube body 100, the powder is stretched and diffused under the action of the Venturi effect, and the powder has a tendency to flow to the second end, which can improve the powder conveying efficiency.

[0039] The detachable sleeve of the kit 200 is disposed at the first end of the tube body 100 to facilitate the disassembly and replacement of the venturi tube.

[0040] The nozzle 300 is disposed in the sleeve 200 and is coaxially disposed with the passage 110 of the tube body 100 .

[0041] It can be understood that the venturi tube for spraying equipment provided by the utility model, by arranging the nozzle 300 coaxially with the tube body 100, when the powder enters from the nozzle 300, the powder is fully aligned with the first end of the tube body 100 to enter the channel 110, and the contact area between the powder and the first end of the tube body 100 is reduced, so that the wear of the first end of the tube body 100 can be reduced, and the powder can be transported more smoothly, so as to improve the powder transportation efficiency.

[0042] Specifically, the nozzle 300 and the sleeve 200 can be integrally formed, and the nozzle 300 is connected to the outside, so that the powder can more easily enter the nozzle 300. In addition, the integrally formed structure can prevent the position of the nozzle 300 and the sleeve 200 from being easily deformed under the impact of the powder, further improving the coaxiality of the nozzle 300 and the tube body 100.

[0043] In some embodiments of the utility model, the body is further provided with a barb 120, and the barb 120 is inclined toward the first end of the tube body 100. That is, the angle between the barb 120 and the axis of the tube body 100 is located at the first end of the tube body 100 (the first end is the end for inserting into the powder pump, and the second end is the end for discharging powder), so that when the venturi tube is removed from the powder pump (pulled out from the first end to the second end), the force is smaller and it is easier to remove.

[0044] Of course, a plurality of barbs 120 may be provided, each barb 120 being evenly distributed to form a barb pattern, and each barb 120 being inclined toward the first end of the tube body 100, that is, the point where the barb 120 forms an acute angle with the axis of the tube body 100 is located at the first end of the tube body 100, further making the venturi tube easier to disassemble and replace.

[0045] In some embodiments of the present invention, the channel 110 includes a first channel 111 and a second channel 112 , and the first channel 111 and the second channel 112 are connected to each other.

[0046] The first channel 111 is located at the first end of the tube body 100, and the second channel 112 is located at the second end of the tube body 100. The first channel 111 is straight-through, and the second channel 112 is tapered. When powder enters from the first end of the tube body 100, the powder transitions from the straight-through first channel 111 to the tapered second channel 112, and a Venturi effect occurs, which can make the powder conveying speed faster, so as to improve the powder transmission efficiency.

[0047] Furthermore, in order to store more potential energy when the powder enters the first channel 111, the Venturi effect can be better utilized, so that the powder can be ejected more efficiently after entering the second channel 112. In some embodiments, the diameter of the first channel 111 is greater than the diameter of the tapered hole of the second channel 112 at the first end of the tube body 100.

[0048] In some embodiments of the present invention, the first channel 111 and the second channel 112 are coaxially arranged, and the nozzle 300 is located in the first channel 111 and coaxially arranged with the first channel 111. The first channel 111 and the second channel 112 are coaxially arranged, so that the powder can be better transported to the second channel 112, and the Venturi effect can be better used to improve the powder transportation efficiency.

[0049] In addition, in order to increase the sealing performance between the venturi tube and the spraying equipment (such as a powder supply pump), the venturi tube provided in the embodiment of the utility model further includes a sealing ring 400. The sealing ring 400 surrounds the outside of the kit 200. For example, a groove can be provided outside the surrounding kit 200 to place the sealing ring 400, so that after the kit 200 is installed on the powder supply pump, the sealing ring 400 can be in close contact with the wall position related to the powder supply pump. In this way, it can be ensured that there is no air leakage and the powder extraction efficiency is maximized. Of course, multiple sealing rings 400 can be provided, for example, two.

[0050] In some embodiments of the present invention, the venturi tube is further provided with corrugations 500 on the outside of the kit 200. The corrugations 500 can prevent the venturi tube from slipping and falling when being taken and installed, and make it easier to disassemble and assemble.

[0051] In some embodiments of the present invention, the venturi tube is further provided with a protrusion 600 on the outside of the kit 200 .

[0052] The protrusion 600 can abut against the spraying equipment (such as a powder supply pump) to prevent and reduce foreign matter such as powder from entering the nozzle 300, and can also play the role of a reinforcing rib to increase the strength of the venturi tube.

[0053] In some embodiments of the present invention, the tube body 100 may be a Teflon guide tube. The Teflon guide tube makes it difficult for the powder to stick together and has less friction, which can further improve the powder transmission efficiency.

[0054] In this specification, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "some embodiments", "other embodiments" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0056] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A venturi tube for spraying equipment, characterized in that: include: The pipe body is provided with a channel along its own axial direction, and the cross section of the channel gradually increases from the first end to the second end of the pipe body; A kit, detachably mounted on the first end of the tube body; The nozzle is arranged in the kit and is coaxially arranged with the channel of the tube body.

2. The venturi tube for spraying equipment according to claim 1, characterized in that: The nozzle is integrally formed with the kit and is communicated with the outside.

3. The venturi tube for spraying equipment according to claim 1, characterized in that: The tube body is provided with a barb, and the barb is inclined toward the first end of the tube body.

4. The venturi tube for spraying equipment according to claim 3, characterized in that: There are a plurality of barbs, and each of the barbs is evenly distributed.

5. The venturi tube for spraying equipment according to claim 1, characterized in that: The channel includes a first channel and a second channel that are interconnected, The first channel is located at the first end of the tube body, the second channel is located at the second end of the tube body, and the second channel is a tapered hole.

6. The venturi tube for spraying equipment according to claim 5, characterized in that: The diameter of the first passage is greater than the diameter of the tapered hole of the second passage at the first end of the tube body.

7. The venturi tube for spraying equipment according to claim 6, characterized in that: The first channel and the second channel are coaxially arranged, and the nozzle is located in the first channel and coaxially arranged with the first channel.

8. The venturi tube for spraying equipment according to claim 7, characterized in that: A sealing ring is also included, which surrounds the outside of the kit.

9. The venturi tube for spraying equipment according to any one of claims 1 to 8, characterized in that: The kit is provided with corrugations on the outside.

10. The venturi tube for spraying equipment according to claim 9, characterized in that: A convex block is also arranged outside the kit.

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